Do the radio waves that cell phones emit pose a threat to health?

手机发出的无线电波是否真的对身体健康构成了威胁？

youdao

The key element shared by all the targets of DDoS attacks in the last week has been an inability to cope with a decade-old threat. However, this is not to do with a lack of preparation.

上个星期被DDoS攻击的目标有一个关键的共同点就是都无法应付这个已经出现十年的威胁，而且是在做了防备的情况下。

youdao

I just said he has to be focused, concentrated, do his job, score goals and be a threat to defenders.

我只是告诉他，他需要集中精神，全神贯注地做好他的工作，就是进球和给防守队员造成威胁。

youdao

"Taking this as a clear indication of Tory priorities, the NHF would do well to consider the threat a Cameron government would pose to affordable housing, " he said.

BBC: Spending cuts 'could hit affordable housing'

The Clinton administration has tried to balance sensitivity to Russia's concerns with mounting pressure to do something about a missile threat whose rapid expansion has tended to vindicate the hawks.

ECONOMIST: Rockets overhead

Flight attendants are compelled to respond more quickly to a potential threat but also to do whatever it takes to keep the situation from escalating.

CNN: Air rage: Passengers 'quicker to snap'